CN101462623B - Gas packing bag for tightly holding articles and manufacturing method thereof - Google Patents

Abstract

The invention provides a gas packing bag for tightly clamping articles and a manufacturing method thereof, comprising a first outer membrane and a second outer membrane which are overlapped up and down, wherein the first outer membrane comprises a first side edge, a second side edge and a folded edge positioned between the two side edges; the first outer membrane and the second outer membrane are folded in half along the folded edge, the second outer membrane is overlapped on the outer side of the first outer membrane, and the folded first outer membrane and the folded second outer membrane are heat-sealed and bonded at the folded edge to form a heat-sealing part; the first outer membrane and the second outer membrane are bonded in a heat-sealing mode, at least one first air chamber is formed between the first side edge and the heat-sealing part, at least one second air chamber is formed between the second side edge and the heat-sealing part, and an accommodating space for storing articles is formed in the first outer membrane; at least one vent hole is arranged on the first outer membrane after being folded, and the vent hole enables the first air chamber and the second air chamber to be communicated and is adjacent to the folded edge. When the air chambers are inflated, the first and second air chambers can tighten up the articles to fix the articles in the containing space, so that the structure strengthens the buffer protection of the articles and can prevent the articles from puncturing the gas packaging bag.

Description

Gas packaging bag for tightly clamping articles and manufacturing method thereof

technical field

The invention relates to a gas packing bag and a manufacturing method thereof, in particular to a gas packing bag tightly clamping articles and a manufacturing method thereof.

Background technique

Generally, when packing items, the items will be placed directly into the carton, but because the carton can only pack the items without the buffer protection function, the items are easily damaged due to shaking during transportation, so the buffer is often placed in the carton when packing the items material to improve the cushioning protection function of the carton. A common method is to stuff foam between the article and the carton, and use the softness of the foam to provide cushioning protection for the article. However, the cost of foam is expensive, which will increase the cost of packaging and is very uneconomical, and the waste of foam is not easy to dispose of, which is likely to cause environmental problems. Furthermore, although the foam can be closely attached to the surface of the article, its anti-collision effect is not good, and the article is often damaged due to impact.

Another common cushioning material is foam plastic (that is, a material formed by high-temperature foaming of polystyrene, also known as "Styrofoam"). First wrap the item with foam plastic and then put it in a carton. In order to avoid the collision of items in the process of handling. Although foam plastics can prevent items from being damaged by shaking, foam plastics are fluffy and take up a lot of space, and are not easy to be decomposed by microorganisms. Incineration will release poisonous gas that is harmful to the human body and cause serious environmental pollution. Today, with the rising awareness of environmental protection However, foam plastic is not quite an ideal cushioning material. Furthermore, items of different sizes and sizes cannot share foam plastic packaging, and foam plastics of different sizes must be used, which is not only a waste of resources, but also increases the packaging cost of the items.

In order to solve the above problems, a kind of gas packaging bag made by heat-sealing and bonding two plastic films has been produced, so that the articles can be cushioned and protected when shaking. Although the gas packaging bag can provide better cushioning protection, when the item has a sharp angle or a hardware material with a sharp angle, it is easy to puncture the gas packaging bag due to the shaking of the item in the gas packaging bag. If there is a small hole in the gas packaging bag, the gas in the gas packaging bag will leak out, causing the gas packaging bag to lose the effect of cushioning and protection, thereby increasing the packaging cost of the article. In order to solve this problem, the plastic film of the gas packaging bag can be strengthened or thickened, thereby reducing the chance of being punctured by objects, but under continuous mass production conditions, it is impossible to strengthen or thicken a single side of the gas packaging bag. It must be strengthened or thickened in an all-round way, resulting in a substantial increase in manufacturing costs and loss of market competitiveness.

It can be seen from this that how to provide good cushioning protection for items, avoid damage or scratches due to collisions during transportation, and solve the problem that gas packaging bags are easily punctured by items, thereby reducing the manufacturing cost of cushioning materials. A problem that those skilled in the art are eager to solve.

Contents of the invention

In order to overcome the above-mentioned defects of the prior art, the first object of the present invention is to provide a gas packaging bag which can effectively and tightly hold articles.

A second object of the present invention is to provide a method of manufacturing a gas packing bag which can effectively and tightly hold articles.

In order to achieve the above-mentioned first object, the present invention provides a gas packaging bag for tightly clamping articles, comprising a first outer film and a second outer film stacked up and down, the first outer film includes a first side, a second Sides and the folded edges between the first and second sides; fold the first outer membrane and the second outer membrane in half along the folded edges, so that the second outer membrane is superimposed on the outside of the first outer membrane, and at the folded edge Heat-sealing and bonding the folded first and second outer films to form a heat-sealed portion; the first and second outer films are heat-sealed and bonded, and at least one first outer film is formed between the first side and the heat-sealed portion An air chamber, at least one second air chamber is formed between the second side and the heat-sealed part, and an accommodating space for storing articles is formed in the first outer film; the first outer film after being folded in half At least one air hole is provided on the top, and the air hole communicates the first air chamber with the second air chamber and is adjacent to the folded edge.

Between the first and second outer films, there are two inner films stacked up and down, and at least one piece of heat-resistant material is coated between the two inner films; after heat-sealing and bonding the two inner films, the At least one air inlet is formed between the hot material and the two inner films, the air inlet is located on one side of the first air chamber, and communicates the first air chamber with the outside; each air inlet is connected with a gas channel, The gas channel is formed between the two inner films after coating the heat-resistant material between the two inner films by means of heat sealing.

The two inner films are provided with heat sealing points, so that the two inner films are respectively bonded to the first outer film and the second outer film.

It also includes an inflatable passage, which is located on one side of the first air chamber. The inflatable passage is a gas-permeable space formed by heat-sealing and bonding the first outer film and the second outer film. The gas enters the air inlet through the inflatable passage.

On the first air chamber and the second air chamber, there are also heat-pressed nodes and collar parts, which are formed by heat-sealing and bonding the first outer film and the second outer film, and each collar part surrounds the A thermobaric node.

At least one hanging hole is also provided on the heat-sealed portion.

The accommodating space is in a vacuum state.

The peripheries of the ventilation holes are heat-sealed.

At least one cutting line is provided between each of the first air chambers and between each of the second air chambers, and the cutting line runs through the entire length of the packaging bag.

In order to achieve the above-mentioned second purpose, the present invention also provides a method for manufacturing a gas packaging bag for tightly clamping articles, which includes the following steps: the first step: providing a first outer film and a second outer film stacked up and down, the The first outer film includes a first side, a second side, and a folded edge between the first and second sides; the second step: fold the first outer film in half along the folded edge; the third step: close the folded edge through the folded first outer film to form at least one ventilation hole; the fourth step: fold the second outer film in half so that it is superimposed on the outside of the first outer film; fifth step: heat seal at the folded edge Connecting the first and second outer films to form a heat-sealed part; step 6: heat-sealing and bonding the first and second outer films to form at least one first air chamber between the first side and the heat-sealed part, And at least one second air chamber is formed between the second side and the heat-sealed part, and an accommodating space for storing articles is formed in the first outer film.

After providing the first and second outer membranes, it also includes: placing two upper and lower inner membranes between the first and second outer membranes, and at least one piece of heat-resistant material is coated between the two inner membranes. ; After heat-sealing and bonding the two inner films, at least one air inlet is formed between the heat-resistant material and the two inner films. The air inlet is located on one side of the first air chamber, and the gas enters the first air chamber and the first air chamber through the air inlet. The second air chamber; each of the air inlets is connected with a gas channel, which is formed on the two inner films by coating the heat-resistant material between the two inner films and bonding the two inner films by means of heat sealing between.

Heat-sealing points (2c) are formed on the two inner films by means of heat sealing, so that the two inner films are heat-sealed and adhered to the first outer film and the second outer film respectively.

After the sixth step, it also includes: heat-sealing the first outer film and the second outer film to form an air-filled channel, and the air channel is located on one side of the first air chamber.

In the fifth step, at least one hanging hole is formed on the heat-sealed part.

After the sixth step, it also includes heat-sealing and bonding the first outer film and the second outer film to form heat-pressed nodes and ring portions, and each ring portion surrounds a heat-pressed node.

After the sixth step, it also includes placing items into the accommodating space.

After the sixth step, it also includes: setting at least one cutting line, which is located between the first air chambers and the second air chambers, and the cutting line runs through the entire length of the packaging bag.

After putting the article into the accommodating space, it also includes: vacuumizing the accommodating space, so that the first air chamber and the second air chamber tightly bind the article.

After placing the article into the accommodating space, it further includes: heat-sealing and bonding the upper and lower ends of the first outer film and the second outer film to close the accommodating space.

The peripheries of the ventilation holes are heat-sealed.

The gas packaging bag of the present invention can accommodate articles in the accommodation space. When the first air chamber and the second air chamber are inflated, the first air chamber and the second air chamber will tighten the articles, so that the articles are fixed in the accommodation space. The structure of the invention not only strengthens the cushioning and protection effect on the articles, but also solves the problem that the gas packing bags are easily punctured by the articles.

Description of drawings

Figure 1 is a schematic diagram (1) of the first embodiment of the gas packaging bag of the present invention before heat sealing;

Fig. 2 is a schematic diagram (2) of the first embodiment of the present invention before heat sealing;

3A is a cross-sectional view of the first embodiment of the present invention after inflation;

FIG. 3B is a partially enlarged schematic diagram of FIG. 3A;

Fig. 4 is a cross-sectional view of the first embodiment of the present invention with an inserted object after inflation;

Fig. 5 is a three-dimensional schematic view of the first embodiment of the present invention after the object is inflated;

Fig. 6A is a cross-sectional view of the second embodiment of the present invention after inflation;

FIG. 6B is a partially enlarged schematic diagram of FIG. 6A;

7 is a plan view of the second embodiment of the present invention before inflation;

Fig. 8 is a cross-sectional view of an inflated object according to a third embodiment of the present invention;

Fig. 9 is a plan view of the fourth embodiment of the present invention before inflation;

Fig. 10 is a cross-sectional view of the fourth embodiment of the present invention with an object inserted after inflation.

Detailed ways

First embodiment:

Figures 1 to 5 show the first embodiment of the gas packaging bag for tightly clamping objects according to the present invention.

The gas packaging bag 1 for tightly clamping articles of the present invention includes: a first outer film 2a and a second outer film 2b stacked up and down, a heat-sealed part 5, a first air chamber 11, a second air chamber 12, and a ventilation hole 6 , Accommodating space 10, etc.

The first outer membrane 2 a includes a first side 21 , a second side 22 and a folded edge 23 , the folded edge 23 is located between the first side 21 and the second side 22 . Fold the first outer membrane 2a in half along the folded edge 23, then fold the second outer membrane 2b in half according to the direction in which the first outer membrane is folded in half, so that the second outer membrane and the first outer membrane all face the same direction after being folded in half, and The second outer membrane 2b is located outside the first outer membrane 2a, that is, the second outer membrane is superimposed on the outer side of the first outer membrane 2a.

The folded first outer film and the second outer film are heat-sealed and bonded at the folded edge 23 to form the above-mentioned heat-sealed portion 5 . At least one hanging hole 51 is provided on the heat-sealed part 5 , which is a through hole for hanging the gas packaging bag 1 on a hook, so that the user can display or store the gas packaging bag containing the article 100 .

As shown in Figure 3A, at least one air hole 6 is provided on the first outer membrane 2a after being folded in half, the air hole is adjacent to the folded edge 23, the air hole makes the first air chamber communicate with the second air chamber, and the air hole 6 It is a through hole that runs through the folded first adventitia. Then heat-sealing means is used to bond the peripheral edge 61 of the vent hole 6 so that the accommodating space 10 is not communicated with the first air chamber 11 and the second air chamber 12 .

By bonding the folded first outer film 2a and the second outer film 2b by means of heat sealing, at least one first air chamber 11 that can store gas is formed between the first side 21 and the heat seal part 5, and at the second At least one second gas chamber 12 capable of storing gas is formed between the two sides 22 and the heat-sealed portion 5 . The above-mentioned heat-sealing and bonding of the two outer films also includes heat-sealing and bonding the two sides of the folded first outer film and the second outer film, so that a space for storing articles 100 is formed between the folded first outer films 2a. The accommodation space 10. Wherein the heat-sealing means can be hot mold stamping.

According to the structure disclosed in the present invention, the gas packaging bag 1 also includes two inner films 1a, 1b stacked up and down, and the two inner films are located between the first outer film 2a and the second outer film 2b, as shown in Figure 3A and Figure 3B As shown, heat sealing points 2c are formed on the two inner films by means of heat sealing, so that the first outer film 2a and the inner film 1a, and the second outer film 2b and the inner film 1b are bonded to each other. At least one strip of heat-resistant material 1c is coated between the two inner membranes 1a and 1b. After the two inner films are heat-sealed and bonded, at least one air inlet 2e is formed between the two inner films at the place coated with a heat-resistant material. The air inlet is formed on one side of the first air chamber, and the air inlet makes the first air chamber 11 communicates with the outside, so that gas enters the first air chamber 11 and the second air chamber 12 through the air inlet 2e to inflate the two air chambers.

As shown in Figure 4, the user first puts the object 100 into the accommodating space 10, and then pulls the first outer membrane 2a and the second outer membrane 2b apart to open the air inlet 2e, so that the gas enters the second outer membrane 2e through the air inlet 2e. An air chamber 11, and a part of the gas flows to the second air chamber 12 through the vent hole 6, so that both the first air chamber 11 and the second air chamber 12 are inflated. After the first air chamber 11 and the second air chamber 12 are inflated and inflated, the air pressure inside the first air chamber 11 presses the two inner membranes 1a, 1b so that they are tightly pressed against the first outer membrane 2a or the second outer membrane 2b , or according to the differences in their structures, the two inner membranes 1a, 1b may not be side-attached to the first outer membrane 2a or the second outer membrane 2b, but suspended in the first air chamber 11 to cover the air inlet 2e and close The first air chamber 11 prevents the gas in the first air chamber 11 and the second air chamber 12 from leaking to achieve the effect of air-tightness.

After the inflation and expansion of the first air chamber 11 and the second air chamber 12 are completed, the first air chamber 11 and the second air chamber 12 will tighten the article 100 so that the article 100 is fixed in the accommodating space 10 without being blown by the gas. The packing bag 1 shakes, which strengthens the buffer protection for the article 100 . In addition, when the article 100 has sharp corners or hardware materials with sharp corners, since the article 100 is prevented from shaking, the gas packaging bag 1 is prevented from being pierced by the sharp corners or sharp corners of the article 100 .

Furthermore, the first air chamber 11 and the second air chamber 12 may also be inflated first, and the object 100 is placed into the accommodating space 10 after the first air chamber 11 and the second air chamber 12 are inflated and expanded.

second embodiment

6A, 6B and 7 show the second embodiment of the present invention. The gas packaging bag 1 of the present invention also includes an inflation channel 9 located at the side of the first air chamber 11 , and a plurality of first air chambers 1 are located at one side of the inflation channel 9 side by side. The inflatable channel 9 is a gas-permeable space formed by heat-sealing the first outer film 2 a and the second outer film 2 b , and an inflatable port 9 a is formed at one end of the inflatable channel 9 . In addition, as shown in Figure 7, each gas inlet 2e is connected with a gas channel 14, wherein the gas channel 14 is coated with a heat-resistant material 1c between the two inner films 1a, 1b, and bonded by heat sealing means. Intima 1a, 1b are formed between the two intima.

After the gas entering the inflation port 9a expands the inflation channel 9, the first outer membrane 2a and the second outer membrane 2b are pulled apart to open each gas inlet 2e, so that the gas in the inflation channel 9 passes through each gas inlet 2e and Each gas channel 14 is filled into each first air chamber 11, and wherein a part of the gas flows to the second air chamber 12 through the vent hole 6, so that the first air chamber 11 and the second air chamber 12 are all inflated and expanded. In this way, multiple first air chambers 11 and second air chambers 12 can be inflated at the same time, which effectively saves the inflation time and greatly improves the inflation efficiency.

After the first air chamber 11 and the second air chamber 12 are inflated and expanded, the air pressure in the first air chamber 11 presses the two inner membranes 1a, 1b and presses them tightly against the first outer membrane 2a or the second outer membrane 2b, or According to the differences in their structures, the two inner membranes 1a, 1b may not be side-attached to the first outer membrane 2a or the second outer membrane 2b but suspended in the first air chamber 11 to cover the gas channel 14 and seal the first air chamber. The chamber 11 prevents the gas in the first air chamber 11 and the second air chamber 12 from leaking to achieve the effect of air-tightness.

In addition, as shown in Figure 5, after the first outer film and the second outer film are bonded by heat sealing, a plurality of first air chambers 11 and a plurality of second air chambers 12 are formed between the two outer films. The first air chambers 11 are not connected to each other, and the second air chambers 12 are also not connected to each other. A vent hole 6 is provided at the first outer membrane 2a on each pair of opposite first air chambers and second air chambers, and this vent hole 6 makes each pair of opposite first air chambers and second air chambers connected.

As shown in Figure 7, a cutting line 8 can be provided between each first air chamber 11 and each second air chamber 12, and the cutting line runs through the entire length of the packaging bag, and the user can carry out the process along the cutting line 8. Cutting, so that each group of the first air chamber 11 and the second air chamber 12 can be used independently.

third embodiment

Fig. 8 is a cross-sectional view of the third embodiment of the present invention after inflation and inserting an object.

After the user puts the article 100 into the accommodating space 10, the first air chamber 11 and the second air chamber 12 tighten the article 100 by inflating the first and second air chambers, and then the accommodating space 10 is pumped out. The effect of tightening the article 100 by the first air chamber 11 and the second air chamber 12 is strengthened by forming a vacuum, so that the article 100 is fixed in the accommodating space 10 without shaking with the gas packaging bag 1 . After vacuuming is completed, the upper and lower ends of the first outer film and the second outer film are adhered by means of heat sealing to completely seal the accommodating space 10 so that the object 100 will not come out of the accommodating space 10 .

Fourth embodiment

9 and 10 are the fourth embodiment of the present invention. The gas packaging bag 1 of the present invention also includes a heat-pressed node 20a and a ring portion 20b, wherein the heat-pressed node 20a is formed by heat-sealing and bonding the first outer film 2a and the second outer film 2b, and each ring portion 20b surrounds each hot-pressed node 20a, and the ring portion is also formed by heat-sealing the first outer film 2a and the second outer film 2b. When the first air chamber 11 and the second air chamber 12 are inflated and inflated, the article 100 is embedded in the space formed by the thermal pressure node 20a in the accommodating space, and the periphery of the article is covered by the ring portion 20b, which not only prevents the article 100 from As the gas packaging bag 1 shakes, the buffer protection for the article 100 can be strengthened.

The present invention also provides a method for manufacturing a gas packaging bag for tightly clamping articles, which includes the following steps in sequence:

Step 1: Provide the first outer membrane 2a and the second outer membrane 2b that are stacked up and down. The first outer membrane 2a includes a first side 21, a second side 22 and a folded edge 23, and the folded edge 23 is located on the first side Between the side 21 and the second side 22 .

Then place the two inner membranes 1a and 1b stacked up and down between the first outer membrane 2a and the second outer membrane 2b, and form a heat-seal point 2c on the two inner membranes by means of heat sealing, so that the first outer membrane 2a It is bonded to the inner membrane 1a, and the second outer membrane 2b is bonded to the inner membrane 1b. After at least one strip of heat-resistant material 1c is coated between the two inner films 1a, 1b, at least one air inlet 2e is formed between the two inner films by means of heat sealing, so that the first air chamber 11 can communicate with the outside. In addition, each gas inlet 2e is connected with a gas channel 14, which is formed by bonding the two inner films by heat-sealing means after the heat-resistant material 1c is coated between the two inner films 1a and 1b. between the two inner membranes.

Step 2: Fold the first outer film 2 a in half along the folded edge 23 so that the second side 22 is located above the first side 21 , or the first side 21 is located above the second side 22 .

Step 3: Penetrating through the folded first outer membrane 2 a adjacent to the folded edge 23 to form at least one ventilation hole 6 .

Wherein, a spacer is first used to block the first outer membrane 2a and the second outer membrane 2b, so that the first outer membrane 2a can be penetrated without affecting the second outer membrane 2b, that is, the folded first outer membrane 2a Upper and lower corresponding ventilation holes are formed.

Then, the peripheral edge 61 of the vent hole 6 on the first outer film is heat-sealed.

Step 4: Fold the second outer membrane 2b in half and make it overlap the outer side of the first outer membrane 2a.

The second outer membrane 2b is folded in half and overlapped with the first outer membrane 2a in the same direction, so that the first outer membrane 2a and the second outer membrane 2b face the same direction after being folded in half, and the second outer membrane 2b is located on the first outer membrane 2b. Outer side of adventitia 2a.

Step 5: heat-sealing and bonding the first outer film 2a and the second outer film 2b at the folded edge 23 to form a heat-sealed part 5;

In addition, at least one hanging hole 51 may be provided on the heat-sealed part 5 for hanging the gas packaging bag 1 on a hook, so that users can display or store the gas packaging bag 1 wrapped with the article 100 .

Step 6: heat-sealing and bonding the first outer film 2a and the second outer film 2b to form at least one first air chamber 11 between the first side 21 and the heat-sealed part 5, and at the second side 22 At least one second air chamber 12 is formed between the heat-sealed part 5 ; an accommodating space 10 for storing articles 100 is formed in the first outer film 2 a.

Then heat-sealing the upper and lower ends of the first outer film and the second outer film to form a closed accommodation space.

Wherein, the first air chamber 11 communicates with the second air chamber 12 through the air hole 6 , while the accommodating space 10 does not communicate with the first air chamber 11 and the second air chamber 12 .

In addition, the inflatable channel 9 can also be formed by heat-sealing the first outer film 2a and the second outer film 2b, and an inflatable port 9a is formed at one end of the inflatable channel 9, and the inflatable channel 9 is located on the side of the first air chamber 11 A plurality of first air chambers 11 are formed side by side on one side of the inflatable channel 9 .

When the gas entering the inflation port 9a expands the inflation channel 9, the first outer membrane 2a and the second outer membrane 2b are pulled apart to open the gas inlet 2e, so that the gas in the inflation channel 9 passes through each gas inlet 2e and gas The channel 14 is filled with a plurality of first air chambers 11 , and a part of the gas flows to the second air chamber 12 through the vent hole 6 , so that both the first air chamber 11 and the second air chamber 12 are inflated.

In addition, a cutting line 8 may be provided between each first air chamber 11 and each second air chamber 12 for users to cut along the cutting line 8 so that each group of first air chambers 11 and the second air chamber 12 can be used independently. This cut line runs the entire length of the bag.

In the present invention, after the article 100 is placed into the accommodating space 10, the gas in the accommodating space 10 is extracted to make the first air chamber 11 and the second air chamber 12 tighten the article 100, so that the article 100 is fixed in the accommodating space. Placed in the space 10 without shaking with the gas packaging bag 1. After the vacuuming operation is completed, the accommodating space 10 is sealed by bonding the first outer film 2a by means of heat sealing, so that the object 100 will not come out of the accommodating space 10 .

In the present invention, the first air chamber 11 and the second air chamber 12 can be inflated first, and after the inflation and expansion of the first air chamber 11 and the second air chamber 12 are completed, the object 100 can be placed into the accommodating space 10; the present invention The first air chamber 11 and the second air chamber 12 may also be inflated after placing the object 100 into the accommodating space 10 first.

According to the method disclosed in the present invention, it also includes heat-sealing and bonding the first outer film 2a and the second outer film 2b to form the hot-pressed node 20a and the collar part 20b, and the collar part 20b is formed outside the hot-pressed node 20a, each A ring portion 20b surrounds each heat-press node 20a. After the first air chamber 11 and the second air chamber 12 are inflated, the object 100 is inserted into the space formed by the heat-pressing nodes 20a in the accommodating space, and the periphery of the object is covered by the collar portion 20b.

The continuous inflatable structure of the present invention can inflate multiple first air chambers 11 and second air chambers 12 at the same time, and can fix the article 100 in the accommodating space 10 without shaking with the gas packaging bag 1 . It not only strengthens the buffer protection of the article 100, but also prevents the gas packaging bag 1 from being punctured due to the shaking of the article 100. In addition, there is no need to additionally strengthen or thicken the first outer film 2 a and the second outer film 2 b of the present invention, thereby greatly reducing the manufacturing cost of the gas packaging bag 1 .

Although the technical content of the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any changes made by those skilled in the art without departing from the content of the present invention shall fall within the scope of the present invention.

Claims (18)

1. the gas packing bag of a tight holding articles, it is characterized in that, comprise first adventitia (2a) and second adventitia (2b) that coincide up and down, this first adventitia (2a) comprises first side (21), second side (22) and the conduplication side (23) between first, second side;

Along conduplication side (23) doubling first adventitia (2a) and second adventitia (2b), second adventitia is repeatedly put in the outside of first adventitia, first adventitia after conduplication side (23) is located to seal bonding doubling and second adventitia form heat-sealing portion (5);

First, second adventitia is heat-sealed bonding, between first side (21) and heat-sealing portion (5), be formed with at least one first air chamber (11), between second side (22) and heat-sealing portion (5), be formed with at least one second air chamber (12), and in first adventitia (2a), form an accommodation space (10) that is used to deposit article (100);

Be provided with at least one air extractor vent (6) on first adventitia after the doubling, this air extractor vent makes first air chamber be connected with second air chamber, and contiguous conduplication side (23);

Also be provided with hot pressing node (20a) and ring sleeve portion (20b) on described first air chamber and described second air chamber, they form by sealing bonding first adventitia and second adventitia, and each ring sleeve portion is all around a hot pressing node (20a); When described first air chamber and the described second air chamber inflation, described article (100) embed in the interior formed space of hot pressing node (20a) of described accommodation space (10), are coated by ring sleeve portion (20b) around the described article (100).

2. the gas packing bag of tight holding articles as claimed in claim 1 is characterized in that, also is provided with two inner membrances (1a, 1b) that coincide up and down between described first, second adventitia, is coated with a heat proof material (1c) between two inner membrances at least; After sealing bonding two inner membrances, this heat proof material (1c) locate and two inner membrances between be formed with an air intake (2e) at least, air intake is positioned at a side of first air chamber (11), and makes first air chamber and external communications;

Described each air intake (2e) all is connected with a gas passage (14), and this gas passage is after applying heat proof material (1c) between two inner membrances (1a, 1b), via bonding two inner membrances of heat-sealing means and be formed between two inner membrances.

3. the gas packing bag of tight holding articles as claimed in claim 2 is characterized in that, is equipped with heat seal point (2c) on described two inner membrances (1a, 1b), makes two inner membrances bonding with first adventitia and second adventitia respectively.

4. the gas packing bag of tight holding articles as claimed in claim 2, it is characterized in that, also comprise filling channel (9), it is positioned at a side of first air chamber (11), filling channel (9) is heat-sealing bonding first adventitia and second adventitia and the space of the negotiable gas that forms, and gas enters air intake (2e) by filling channel.

5. the gas packing bag of tight holding articles as claimed in claim 1 is characterized in that, also is provided with a suppending hole (51) in described heat-sealing portion (5) at least.

6. the gas packing bag of tight holding articles as claimed in claim 1 is characterized in that, described accommodation space is vacuum state in (10).

7. the gas packing bag of tight holding articles as claimed in claim 1 is characterized in that, the periphery of described air extractor vent (6) is heat-sealed bonding.

8. the gas packing bag of tight holding articles as claimed in claim 1 is characterized in that, also is provided with a cutting line (8) at least between each described first air chamber (11) and between each second air chamber (12), and this cutting line runs through the length of whole packaging bag.

9. the manufacture method of the gas packing bag of a tight holding articles comprises the following steps:

The first step: first adventitia (2a) and second adventitia (2b) that coincide up and down are provided, and this first adventitia comprises first side (21), second side (22) and the conduplication side (23) between first, second side;

Second step: along conduplication side (23) doubling first adventitia (2a);

The 3rd step: first adventitia (2a) after contiguous conduplication side (23) is located to run through doubling, to form at least one air extractor vent (6);

The 4th step: doubling second adventitia (2b) makes it repeatedly put the outside at first adventitia (2a);

The 5th step: locate to seal bonding first, second adventitia to form heat-sealing portion (5) at conduplication side (23);

The 6th step: seal bonding first, second adventitia, between first side (21) and heat-sealing portion (5), to form at least one first air chamber (11), and between second side (22) and heat-sealing portion (5), form at least one second air chamber (12), and in described first adventitia, form an accommodation space (10) that is used to deposit article (100);

After the 6th step, comprise that also seal bonding first adventitia and second adventitia to form hot pressing node (20a) and ring sleeve portion (20b), each ring sleeve portion is all around a hot pressing node; When described first air chamber and the described second air chamber inflation, described article (100) embed in the interior formed space of hot pressing node (20a) of described accommodation space (10), are coated by ring sleeve portion (20b) around the described article (100).

10. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 9, wherein, also comprise after first, second adventitia is provided: two inner membrances (1a, 1b) that will coincide up and down place between described first, second adventitia, are coated with a heat proof material (1c) between two inner membrances at least; After sealing bonding two inner membrances, this heat proof material (1c) locate and two inner membrances between be formed with at least one air intake (2e), air intake is positioned at a side of first air chamber (11), gas enters first air chamber and second air chamber by air intake;

Described each air intake (2e) all is connected with a gas passage (14), and this gas passage is after applying heat proof material (1c) between two inner membrances (1a, 1b), is formed between two inner membrances via bonding two inner membrances of heat-sealing means.

11. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 10 wherein, upward is formed with heat seal point (2c) with the heat-sealing means at described two inner membrances (1a, 1b), makes two inner membrances bonding with first adventitia and the heat-sealing of second adventitia respectively.

12. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 9 wherein, also comprises after the 6th step: seal bonding first adventitia and second adventitia to form filling channel (9), this gas passage is positioned at a side of first air chamber.

13. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 9 wherein, also comprises in the 5th step, wears at least one suppending hole (51) in described heat-sealing portion (5).

14. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 9 wherein, after the 6th step, also comprises, article (100) are inserted in the described accommodation space (10).

15. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 9, wherein, also comprise after the 6th step: at least one cutting line (8) is set, and it is positioned between first air chamber (11) and between second air chamber (12), this cutting line runs through the length of whole packaging bag.

16. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 14 wherein, also comprises after article are inserted accommodation space: will be evacuated in the accommodation space (10), make first air chamber and second air chamber tightly restraint article.

17. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 14, wherein, also comprise after article are inserted accommodation space: the upper and lower side that seals bonding first adventitia and second adventitia is to seal this accommodation space (10).

18. the manufacture method of the gas packing bag of tight holding articles as claimed in claim 9, wherein, the periphery of described air extractor vent (6) is heat-sealed bonding.

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